Calculation of cultivated land utilization efficiency and analysis of Gini coefficient in Yunnan Province based on random forest

doi:10.14088/j.cnki.issn0439-8114.2023.07.006

Abstract

Abstract: Taking 16 autonomous prefectures and cities of Yunnan Province from 2011 to 2020 as the research object, data of 10 indicators such as agricultural machinery power and labor force per land was collected, and the weights of these indicators were obtained by using the random forest algorithm in R language. On the basis of this, the cultivated land use efficiency of the 16 prefectures and cities was obtained. The Gini coefficients of cultivated land use efficiency among six groups of different regions were calculated according to the Gini coefficient mean difference formula. The results showed the average cultivated land utilization efficiency of Diqing Tibetan Autonomous Prefecture, Dehong Dai and Jingpo Autonomous Prefecture, Nujiang Lisu Autonomous Prefecture, and Dali Bai Autonomous Prefecture was high from 2011 to 2020, while the average cultivated land utilization efficiency of Pu'er City and Lincang City was relatively low; compared with other five groups of different regions, the Gini coefficient of cultivated land utilization efficiency of central and western Yunnan decreased as a whole, while the average Gini coefficients of central and southern Yunan, and southern and northern Yunnan were the smallest in the 6 groups of different regions.

Key words: cultivated land use efficiency, random forest, Gini coefficient, Yunan Province

CLC Number:

F301.21

LI Hao-xun, ZHENG Hong-gang, LIU Shu-xia, ZHAO Hao, CHEN Ran. Calculation of cultivated land utilization efficiency and analysis of Gini coefficient in Yunnan Province based on random forest[J]. HUBEI AGRICULTURAL SCIENCES, 2023, 62(7): 32-37.

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